Why don’t you have data on 100% of people? Follow
First, we only publish data on the adult population of a given country, so by default, we will not have information on people under the age of 18.
Second, there are people who have made conscious decisions to stay “off the grid” by not leveraging traditional lines of communication and/or banking, or who have gone through the steps of removing their information from public records.
Lastly, there are more than 250M adults in the US. While we have information on about 95% of them, there are always going to be data points that slip through the cracks. This doesn’t deter us from trying to improve our coverage, but we will never have data on 100% of the people in a country.
If you have any questions or for more information, contact us at firstname.lastname@example.org.